PENGARUH TEBAL DINDING TERHADAP STABILITAS DINDING PENAHAN TANAH PADA RENCANA RETAINING WALL JALAN MUALLAF KECAMATAN TENGGARONG

Abstract

Tenggarong District which is the capital of Kutai regency of course require
good road infrastructure, as this is one of the veins, especially in the area of the
Capital District, both as infrastructure and as a mode of transportation and
supporting the economic development of society. In general, landslides are
frequent natural disaster when the rainy season arrives. Landslides caused by
the movement of the material making up a slope or the road consisting of soil,
rock, or a mixture of the two materials, which then undergoes mass transfer or
have movement follows the shape of the slope or the road.
In some cases retaining wall construction also experienced structural
failure or not capable of withstanding the load acting due to rolling and sliding.
Failure of retaining wall construction on the course should be studied from
various aspects, including the dimensions used on the construction of retaining
wall. As a major part of the load bearing wall thickness of the soil pressure on
retaining wall kosntruksi needs to be studied in the design so as to get a robust
design and economical.
In this study, given the restrictions that are more focused on the type of
construction of a retaining wall that is used is the type counterfort, loads are
taken into account in the design consists of dead load, additional dead load,
traffic load, the load pressure of the soil and earthquake loads, variations in
thickness below the retaining wall used are two variations of thickness 0,450
meters and 0,250 meters and the quality of concrete used is K.325, or 325
kg/cm2. From the calculation of the construction of retaining walls that are
reviewed against the wall thickness is found that the largest axial force that
works on both the thickness variation is 1208,1509 KN greatest shear forces
working on x-axis direction retaining wall of 1115,7013 KN. From the
calculation shows that the thick wall retaining wall will affect the ability of the
wall withstand moments around, so that the thicker wall retaining the ability
walls hold bolsters will be even greater, and vice versa thinner walls, hence the
ability of the wall withstand bolsters will be smaller. While the influence of the
wall thickness due to the shear force is not significant.